New Year's Eve 2027 is Friday, 31 December 2027
There are 499 days between 19 August 2026 and New Year's Eve 2027, which falls on Friday, 31 December 2027. That is 71 weeks and 2 days, or 340 working days once Saturdays, Sundays and the US federal holidays in between are taken out — the figure that matters if you are counting delivery lead time or a work schedule rather than sleeps. The date is 2027-12-31 in ISO form and 12/31/2027 in the US format, it falls in ISO week 52 of 2027, and it is day 365 of 365.
How the date of New Year's Eve is decided
New Year's Eve is always 31 December.
That makes it a fixed date: the same day of the same month every year, so it lands on a different weekday each time. In 2027 it is a Friday.
New Year's Eve is an observance rather than a federal holiday. Offices, banks and schools stay open unless an individual employer chooses otherwise, and it counts as an ordinary business day in every calculator here. Only the eleven federal holidays are treated as non-working days — the list and the reasoning are on the holiday sources page.
New Year's Eve in the years after 2027
| Year | Date | Day | Countdown |
|---|---|---|---|
| 2028 | 31 December 2028 | Sunday | New Year's Eve 2028 |
| 2029 | 31 December 2029 | Monday | New Year's Eve 2029 |
| 2030 | 31 December 2030 | Tuesday | — |
The date does not move, but the weekday does — which is why the same holiday gives a long weekend in some years and not others.
Every convention used above — whether the start date counts, how month ends are clamped, which holidays close an office — is written out on the methodology page, including how we count the 340 working days above.